Argument: Adaption is not as economical as mitigation
"The lessons of Katrina: Global warming “adaptation” is a cruel euphemism — and prevention is far, far cheaper." Climate Progress. August 29, 2009: "The adaptation trap is the belief that 1) “it would be easier and cheaper to adapt than fight climate change” [as the Times puts it in the sub-head] and/or 2) “adaptation” to climate change is possible in any meaningful sense of the word absent an intense mitigation effort starting now to keep carbon dioxide concentrations below 450 ppm.
[...] If Katrina shows us anything, it is that preventing disaster would be considerably less expensive — and more humane — than forcing future generations to “adapt to” an unending stream of disasters."